Boiler.



G. W. SEDDON.

BOILER. APPLICATION FILED NOV. 11, 1910.

1,038,004, Patented Sept. 10, 1912.

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1 NITED STATES AT NroFF o CHARLES w. SEDDONVV, or rRoo'roR, MINNESOTA.

BOILER.

To all whom it may concern:

Be it known that I, CHARLES W. SEonoN, a citizen of the United States, residing at Proctor, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Boilers, of which the following is a specification.

My invention relates to'improvements in steam boilers of the kind where the feed water is sprayed into the steam space of the boiler, its objectsbeing, among other things,

to protect the boiler from the deposit of sedi-' ment from the feed water and also to'increase the temperature of the feed water beforeit mingles with the water already in the boiler.

.Where the feed water is sprayed into the steam spaceof the boiler, as is illustrated in U. S. Letters Patent No. 929,716, issued to me on August 3, 1909, it is broken up into' small particles, and all foreign substances contained in the water are immediately pre-' cipitated and deposited.

The structure which forms the subject of this inventionis designed to prevent this sediment from falling into the water already in the boiler and collecting about the flues, water leg, and boiler sheets, as well asto sub ject the newly injected feed water to greater heat before it is delivered to the water in the boiler.

I With this and other objects in view the invention consists in the construction, combination, and arrangement of parts hereinafter described and claimed.

In the accompanying drawings forming part of this specification, Figure 1 is a cross section through a horizontal tubular boiler on line y-y of Fig. 2 showing the present improvement applied thereto; Fig. 2 is a view of a fragment of the boiler, partly in longitudinal section on line mw of Fig. 1 and partly in side elevation with some parts broken away; Fig. 3 is a detail partly in section and partly in side elevation of the feed water pipe and check valve; and Fig. 4 is a perspective View on a much. smaller scale of a fragment of the upper portion of a boiler showing the pan or box for receiving the sediment.

In the drawings A represents the shell of a tubular boiler, B the flues, and C a pair of check valves arranged on opposite sides of the boiler. These have pipe connection with a feed water injector (not shown). Carried Specification of Letters Patent. 7

by: each check valve is a feed water pipe 3 which passes removably through a hole 4 in flange 6, to which the check valve is removably secured by any suitable means such as the tubular coupling 7- shown in the drawingswhich has threaded engagement at one end with the flange, and at the other end with the'outlet pipe 8 of the check valve. The feed Water pipe 3, which is secured at one end to the outlet pipe of the check valve, passes through the coupling, flange and boiler shell with sufiicientfreedom to be capable of being inserted into,*and withdrawn from, the boiler without removing the flange. After the coupling 7 is un screwed the pipe 3 can be withdrawn with the, check valve by simply pulling it out through. the openings n the boiler and flange.

The construction above described is substantially the same as that disclosed in my Patent No. 929,716 above referred to; It will be understood that the pipes 3 are so positioned that the perforations 5 will be above the normal waterline in the boiler, so that the feed water will be sprayed up into the high pressure steam in the steam space above.

The present invention consists more particularly in the protective structure arranged below the feed water pipes, one embodiment of which is shown in the drawings. As here shown this consists of a pan or box having a bottom 9 which extends across the boiler from side to side just beneath the feed water pipe nozzles, and is bolted or otherwise secured to the sides of the boiler shell by suitable fastenings 10 so as to make a practically water tight joint therewith. At its forward end the pan abuts against the front flue sheet 11 so as to form a tight joint therewith, as shown in Figs. 2 and 4. Thus the two sides of the boiler shell will constitute in eflect the side walls of the pan, while the front flue sheet will I Patented Sept. 10, 1912. Plflication filed November 11, 1910. Serial No. 591,853. .3 I

constitute the front wall. At its rear end the pan has an upwardly flanged end wall 12, which fits snugly about the underside of the usual dry pipe 13 which extends longitudinally through the steam space of the boiler. Thus the pan constitutes a closed vessel from which no water can flow until it has risen above the level of the flange 12, when it will flow over the flange into the boiler below.

As will be seen from the drawings the sediment pan is so positioned that it Will be lower at its forward end than at its rear end and lower on one side than on the other, so that both of the rear corners will be higher than either of the front corners, and that the highest corner 14 at the rear will be diagonally opposite the lowest corner 15 at the front. At the lowest corner 15 is a blow off cook 16 to carry off the sediment which has collected upon the pan. In order more effectually to clean out the pan, when it is desired, two washout plugs 17 are placed in the boiler shell at the two corners on the raised side of the pan.

IV hen the feed water is sprayed up into the steam space of the boiler, the foreign substances precipitated from it will drop into the water in the pan below and settle and collect upon the pan-bottom; while the injected water will also fall back into the pan, where .it will be held until the level of the water has risen to the top of the rear wall 12, (which is at the highest part of the pan bottom) before it can flow out and mingle with the water already in the boiler, thus permitting the newly fed Water to become still further heated before being delivered to the water below, and allowing more time for the sediment to settle.

I claim as my invention:

1. The combination, with a boiler and a feed water pipe having a discharge nozzle within the steam space of the boiler, of a pan arranged below the discharge nozzle and making a ti ht joint with the sides and front flue sheet 0% the boiler, the pan being highest at the rear and being inclined downwardly to the flue sheet, whereby the feed water will be held within the pan until it has risen sufiiciently to flow over the rear end thereof.

2. The combination, with a boiler and a feed water pipe having a discharge nozzle within the steam space of the boiler, of a pan arranged below the discharge nozzle,

said pan forming a tight joint with the sides it and front flue sheet of the boiler, and being inclined downwardly from one of its corners to the diagonally opposite corner, a blow off cock at the lowermost corner and washout means arranged in the boiler shell on the upper side of the pan.

3. The combination, with a tubular boiler and a feed water pipe having a discharge nozzle within the steam space in the boiler,

of a pan positioned below said discharge nozzle and making a tight joint at sides and front with the sides and front flue sheet of the boiler, the pan-bottom being inclined downwardly from one of its corners to the diagonally opposite corner, and a blow off cock at the lowermost corner.

In testimony whereof I afiix my signature in presence of two witnesses;

CHARLES W. SEDDON.

Witnesses H. H. PEY'roN, FRANCIS MGCABE. 1

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

1 Washington, D. G. 

